[填空题]
The tires of a car make 65 revolutions as the car reduces its sprsxbf*qks2w- 3 my8;70xb ahl eed unifok p:0. :dfpd(q cgg,lwrmly from k( gwp:.dp:fg0qldc, 95km/h to 45km/h The tires have a diameter of 0.80 m. (a) What was the angular acceleration of the tires? $\approx$ $rad/s^2$ (b) If the car continues to decelerate at this rate, how much more time is required for it to stop? s